If the Roomba won't turn on, it may have a dead battery. Depending on how frequently you use your Roomba, the battery pack will need to be replaced every 1 to 3 years. If you have tried charging your Roomba overnight and it still won't turn on, the only repair option is to order another battery from a Roomba vendor and recycle the bad battery. Refer to Battery Replacement Guide

If your Roomba is leaving debris or dirt that should've been picked up, the filter may be clogged. The filter needs to be cleaned regularly or replaced after excessive use. Refer to Filter Replacement Guide

If the main brush is not cleaning or rotating, it may need maintenance. The main brush may need to be cleaned if it is clogged with debris. It may need to be replaced if it is worn down from excessive use. Refer to Main Brush Replacement Guide

If the flexible rubber brush is not cleaning or rotating, it may need maintenance. The flexible rubber brush may need to be cleaned if it is clogged with debris. It may need to be replaced if it is worn down from excessive use. Refer to Flexible Rubber Brush Replacement Guide

If the main brush or flexible rubber brush fall out of place, your brush guard may be broken. If it is broken beyond repair, a new brush guard may be purchased from a Roomba vendor. For brush guard replacement refer to Brush Guard Replacement Guide